OFFSET
1,1
COMMENTS
Column 3 of A203975
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 4*a(n-1) +14*a(n-2) +134*a(n-3) +164*a(n-4) +465*a(n-5) -951*a(n-6) -633*a(n-7) -3451*a(n-8) +4286*a(n-9) +1728*a(n-10) +5640*a(n-11) -7916*a(n-12) -1912*a(n-13) -2947*a(n-14) +6073*a(n-15) +752*a(n-16) +143*a(n-17) -1899*a(n-18) +55*a(n-19) +89*a(n-20) +178*a(n-21) -5*a(n-22) -5*a(n-23) -5*a(n-24)
EXAMPLE
Some solutions for n=5
..0..0..1....0..0..1....0..0..0....0..0..0....0..0..0....0..1..2....0..0..0
..0..0..0....1..0..0....1..1..1....0..1..2....1..0..1....0..0..1....0..1..1
..0..1..1....0..1..0....0..0..2....1..0..0....0..0..1....0..0..0....0..0..2
..1..2..0....1..0..0....1..1..0....0..1..1....0..0..1....0..0..0....0..0..0
..0..0..0....2..1..1....2..2..1....0..1..0....0..1..2....1..1..0....0..1..0
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 08 2012
STATUS
approved